Your purpose could be building a better life for the poor and hungry, or creating a contraption or a system or a device that will make life easier for those in your community.
By being involved in something bigger than you, you have no time to be self absorbed in the pettiness and grinds of daily life.
Unless you give yourself to some great cause, a purpose beyond yourself, you haven't really begun to fully live.
Most people think they have to do exceptional things to find their purpose.
Think about what you love, what moves you.
While it is good to discover your purpose, don't worry about having a purpose that may seem silly at first.
It doesn't have to start big.
If you already have a passion and a purpose for doing something, go for it and pursue it right now.
If you do not have one, start now. Create a mission. Start small.